The GOP has decided to wager their future on the hope that the economy continues to crumble and ultimately crashes. Their unanimous opposition to the economic stimulus bill points to a near sinister approach to regaining power. They intend to vigorously oppose the stimulus package, then tout that opposition in the 2010 and 2012 election cycles when the country is still in dire economic straights. It's a perverse version of the politics of hope. The Party is wagering it's future on the hope that the downward economic trend can't be reversed, at least not until after 2012.
Their thinly veiled strategy is quite obvious. If they expected and favored economic recovery they would simply oppose the bill, then split their votes on the House and Senate floors. The bill would get passed and they would have the dual luxury of claiming credit if things got better, or playing the "I told you so" card if it did not. It's not logical that the GOP would oppose the bill, then hope the Country recovers? No Doubt, in 2010 a strong well financed Democratic Party would flood the airwaves with adds showing the GOP opposition to the stimulus bill that "saved the economy" without a single Republican vote.
The GOP has bet everything on economic disaster. They are well aware that they will never stop this bill, but they want to make a loud point of opposing it. It appears that after losing 56 seats in the last two election cycles, they decided to go for it. They'll be clasping their hands together praying that the economy does not begin to come back before they can capitolize on the fallout.